The Ledlenser Universal Mounting Bracket Type D lets you fit a Ledlenser MH11 or iH11R headlamp to bars and handlebars, for example on a bicycle, a quad bike, a rail or a pole, so the lamp can be used as a fixed light. The bracket is made of polycarbonate. It is an accessory only; the headlamp is not included. Check that your headlamp is an MH11 or iH11R before ordering, as other Ledlenser headlamps use different mounts.